On Fri, 7 Jul 2017, Kees Cook wrote: > If we also added a >0 offset, that would make things even less > deterministic. Though I wonder if it would make the performance impact > higher. The XOR patch right now is very light.
There would be barely any performance impact if you keep the offset within a cacheline since most objects start on a cacheline boundary. The processor has to fetch the cacheline anyways.

